<template>
  <div>
   <!-- 面包屑导航 -->
   <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
   </el-breadcrumb>
   <!-- 卡片视图区域 -->
   <el-card>
      <!-- 搜索栏区域 -->
      <el-row :gutter="20">
         <el-col :span='8'>
            <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList">
             <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
            </el-input>
         </el-col>
         <el-col :span='4'>
            <el-button
            type="primary"
            @click="goAddPage">添加商品</el-button>
         </el-col>
      </el-row>
      <!-- 表格区域 -->
      <el-table
      :data="goodslist"
      border
      stripe>
         <el-table-column type="index"></el-table-column>
         <el-table-column prop="goods_name" label="商品名称"></el-table-column>
         <el-table-column prop="goods_price" label="商品价格(元)" width="110px"></el-table-column>
         <el-table-column prop="goods_weight" label="商品重量" width="70px"></el-table-column>
         <el-table-column prop="add_time" label="创建时间" width="140px">
            <template slot-scope="scope">
               <!-- 调用过滤器 -->
               {{scope.row.add_time | dataFormat}}
            </template>
         </el-table-column>
         <el-table-column label="操作" width="130px">
            <template slot-scope="scope">
               <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
               <el-button
               type="danger"
               icon="el-icon-delete"
               size="mini"
               @click="removeById(scope.row.goods_id)"></el-button>
            </template>
         </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 20, 40]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background>
      </el-pagination>
   </el-card>
  </div>
</template>

<script>
export default {
  name: 'list',
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 总商品数量
      total: 0,
      // 商品列表
      goodslist: []
    }
  },
  methods: {
    // 获取所有商品列表
    getGoodsList() {
      this.$http.get('goods', { params: this.queryInfo })
        .then(res => {
          let result = res.data
          if (result.meta.status !== 200) return this.$message.error('获取列表失败')
          console.log(result.data);
          this.goodslist = result.data.goods
          this.total = result.data.total
        })
    },
    // pagesize发生变化
    handleSizeChange(newsize) {
      this.queryInfo.pagesize = newsize
      this.getGoodsList()
    },
    // pagenum发生变化
    handleCurrentChange(newpage) {
      this.queryInfo.pagenum = newpage
      this.getGoodsList()
    },
    // 根据对应ID删除商品
    removeById(id) {
      this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        this.$http.delete(`goods/${id}`)
          .then(res => {
            let result = res.data
            if (result.meta.status !== 200) return this.$message.error('删除失败')
            this.getGoodsList()
            this.$message.success('删除成功!')
          })
      }).catch(() => {
        this.$message.error('已取消删除')
      });
    },
    // 前往商品添加页面
    goAddPage() {
      this.$router.push('/goods/add')
    }
  },
  created() {
    this.getGoodsList()
  },
}
</script>

<style lang='stylus' scoped>

</style>